pa_bool_t require_exact_channel_number) {
int ret = -1;
- snd_pcm_uframes_t _period_size = *period_size;
- unsigned int _periods = *periods;
+ snd_pcm_uframes_t _period_size = period_size ? *period_size : 0;
+ unsigned int _periods = periods ? *periods : 0;
snd_pcm_uframes_t buffer_size;
unsigned int r = ss->rate;
unsigned int c = ss->channels;
pa_assert(pcm_handle);
pa_assert(ss);
- pa_assert(periods);
- pa_assert(period_size);
snd_pcm_hw_params_alloca(&hwparams);
if ((ret = snd_pcm_hw_params_set_rate_near(pcm_handle, hwparams, &r, NULL)) < 0)
goto finish;
- /* Adjust the buffer sizes, if we didn't get the rate we were asking for */
- _period_size = (snd_pcm_uframes_t) (((uint64_t) _period_size * r) / ss->rate);
- tsched_size = (snd_pcm_uframes_t) (((uint64_t) tsched_size * r) / ss->rate);
-
if (require_exact_channel_number) {
if ((ret = snd_pcm_hw_params_set_channels(pcm_handle, hwparams, c)) < 0)
goto finish;
goto finish;
}
- if (_use_tsched) {
- _period_size = tsched_size;
- _periods = 1;
+ if ((ret = snd_pcm_hw_params_set_periods_integer(pcm_handle, hwparams)) < 0)
+ goto finish;
- pa_assert_se(snd_pcm_hw_params_get_buffer_size_max(hwparams, &buffer_size) == 0);
- pa_log_debug("Maximum hw buffer size is %u ms", (unsigned) buffer_size * 1000 / r);
- }
+ if (_period_size && tsched_size && _periods) {
+ /* Adjust the buffer sizes, if we didn't get the rate we were asking for */
+ _period_size = (snd_pcm_uframes_t) (((uint64_t) _period_size * r) / ss->rate);
+ tsched_size = (snd_pcm_uframes_t) (((uint64_t) tsched_size * r) / ss->rate);
- buffer_size = _periods * _period_size;
+ if (_use_tsched) {
+ _period_size = tsched_size;
+ _periods = 1;
- if ((ret = snd_pcm_hw_params_set_periods_integer(pcm_handle, hwparams)) < 0)
- goto finish;
+ pa_assert_se(snd_pcm_hw_params_get_buffer_size_max(hwparams, &buffer_size) == 0);
+ pa_log_debug("Maximum hw buffer size is %u ms", (unsigned) buffer_size * 1000 / r);
+ }
+
+ buffer_size = _periods * _period_size;
- if (_periods > 0) {
+ if (_periods > 0) {
- /* First we pass 0 as direction to get exactly what we asked
- * for. That this is necessary is presumably a bug in ALSA */
+ /* First we pass 0 as direction to get exactly what we asked
+ * for. That this is necessary is presumably a bug in ALSA */
- dir = 0;
- if ((ret = snd_pcm_hw_params_set_periods_near(pcm_handle, hwparams, &_periods, &dir)) < 0) {
- dir = 1;
+ dir = 0;
if ((ret = snd_pcm_hw_params_set_periods_near(pcm_handle, hwparams, &_periods, &dir)) < 0) {
- dir = -1;
- if ((ret = snd_pcm_hw_params_set_periods_near(pcm_handle, hwparams, &_periods, &dir)) < 0)
- goto finish;
+ dir = 1;
+ if ((ret = snd_pcm_hw_params_set_periods_near(pcm_handle, hwparams, &_periods, &dir)) < 0) {
+ dir = -1;
+ if ((ret = snd_pcm_hw_params_set_periods_near(pcm_handle, hwparams, &_periods, &dir)) < 0)
+ goto finish;
+ }
}
}
- }
- if (_period_size > 0)
- if ((ret = snd_pcm_hw_params_set_buffer_size_near(pcm_handle, hwparams, &buffer_size)) < 0)
- goto finish;
+ if (_period_size > 0)
+ if ((ret = snd_pcm_hw_params_set_buffer_size_near(pcm_handle, hwparams, &buffer_size)) < 0)
+ goto finish;
+ }
if ((ret = snd_pcm_hw_params(pcm_handle, hwparams)) < 0)
goto finish;
if (ss->rate != r)
- pa_log_warn("Device %s doesn't support %u Hz, changed to %u Hz.", snd_pcm_name(pcm_handle), ss->rate, r);
+ pa_log_info("Device %s doesn't support %u Hz, changed to %u Hz.", snd_pcm_name(pcm_handle), ss->rate, r);
if (ss->channels != c)
- pa_log_warn("Device %s doesn't support %u channels, changed to %u.", snd_pcm_name(pcm_handle), ss->channels, c);
+ pa_log_info("Device %s doesn't support %u channels, changed to %u.", snd_pcm_name(pcm_handle), ss->channels, c);
if (ss->format != f)
- pa_log_warn("Device %s doesn't support sample format %s, changed to %s.", snd_pcm_name(pcm_handle), pa_sample_format_to_string(ss->format), pa_sample_format_to_string(f));
+ pa_log_info("Device %s doesn't support sample format %s, changed to %s.", snd_pcm_name(pcm_handle), pa_sample_format_to_string(ss->format), pa_sample_format_to_string(f));
if ((ret = snd_pcm_prepare(pcm_handle)) < 0)
goto finish;
pa_assert(_periods > 0);
pa_assert(_period_size > 0);
- *periods = _periods;
- *period_size = _period_size;
+ if (periods)
+ *periods = _periods;
+
+ if (period_size)
+ *period_size = _period_size;
if (use_mmap)
*use_mmap = _use_mmap;
return 0;
}
-struct device_info {
- pa_channel_map map;
- const char *alsa_name;
- const char *description;
- const char *name;
-};
-
-static const struct device_info device_table[] = {
+static const struct pa_alsa_profile_info device_table[] = {
{{ 1, { PA_CHANNEL_POSITION_MONO }},
"hw",
"Analog Mono",
int i;
int direction = 1;
- int err;
char *d;
snd_pcm_t *pcm_handle;
pa_bool_t reformat = FALSE;
pa_assert(device);
- pa_assert(dev);
pa_assert(ss);
pa_assert(map);
- pa_assert(nfrags);
- pa_assert(period_size);
d = pa_xstrdup(device);
SND_PCM_NO_AUTO_RESAMPLE|
SND_PCM_NO_AUTO_CHANNELS|
(reformat ? 0 : SND_PCM_NO_AUTO_FORMAT))) < 0) {
- pa_log("Error opening PCM device %s: %s", d, snd_strerror(err));
+ pa_log_info("Error opening PCM device %s: %s", d, snd_strerror(err));
pa_xfree(d);
return NULL;
}
continue;
}
- pa_log("Failed to set hardware parameters on %s: %s", d, snd_strerror(err));
+ pa_log_info("Failed to set hardware parameters on %s: %s", d, snd_strerror(err));
pa_xfree(d);
snd_pcm_close(pcm_handle);
return NULL;
}
- *dev = d;
+ if (dev)
+ *dev = d;
if (ss->channels != map->channels)
pa_channel_map_init_extend(map, ss->channels, PA_CHANNEL_MAP_ALSA);
}
}
+int pa_alsa_probe_profiles(
+ const char *dev_id,
+ const pa_sample_spec *ss,
+ void (*cb)(const pa_alsa_profile_info *sink, const pa_alsa_profile_info *source, void *userdata),
+ void *userdata) {
+
+ const pa_alsa_profile_info *i;
+
+ pa_assert(dev_id);
+ pa_assert(ss);
+ pa_assert(cb);
+
+ /* We try each combination of playback/capture. We also try to
+ * open only for capture resp. only for sink. Don't get confused
+ * by the trailing entry in device_table we use for this! */
+
+ for (i = device_table; i < device_table + PA_ELEMENTSOF(device_table); i++) {
+ const pa_alsa_profile_info *j;
+ snd_pcm_t *pcm_i = NULL;
+
+ if (i->alsa_name) {
+ char *id;
+ pa_sample_spec try_ss;
+ pa_channel_map try_map;
+
+ pa_log_debug("Checking for playback on %s (%s)", i->name, i->alsa_name);
+ id = pa_sprintf_malloc("%s:%s", i->alsa_name, dev_id);
+
+ try_ss = *ss;
+ try_ss.channels = i->map.channels;
+ try_map = i->map;
+
+ pcm_i = pa_alsa_open_by_device_string(
+ id, NULL,
+ &try_ss, &try_map,
+ SND_PCM_STREAM_PLAYBACK,
+ NULL, NULL, 0, NULL, NULL,
+ TRUE);
+
+ pa_xfree(id);
+
+ if (!pcm_i)
+ continue;
+ }
+
+ for (j = device_table; j < device_table + PA_ELEMENTSOF(device_table); j++) {
+ snd_pcm_t *pcm_j = NULL;
+
+ if (j->alsa_name) {
+ char *jd;
+ pa_sample_spec try_ss;
+ pa_channel_map try_map;
+
+ pa_log_debug("Checking for capture on %s (%s)", j->name, j->alsa_name);
+ jd = pa_sprintf_malloc("%s:%s", j->alsa_name, dev_id);
+
+ try_ss = *ss;
+ try_ss.channels = j->map.channels;
+ try_map = j->map;
+
+ pcm_j = pa_alsa_open_by_device_string(
+ jd, NULL,
+ &try_ss, &try_map,
+ SND_PCM_STREAM_CAPTURE,
+ NULL, NULL, 0, NULL, NULL,
+ TRUE);
+
+ pa_xfree(jd);
+
+ if (!pcm_j)
+ continue;
+ }
+
+ if (pcm_j)
+ snd_pcm_close(pcm_j);
+
+ cb(i->alsa_name ? i : NULL,
+ j->alsa_name ? j : NULL, userdata);
+ }
+
+ if (pcm_i)
+ snd_pcm_close(pcm_i);
+ }
+
+ return TRUE;
+}
+
int pa_alsa_prepare_mixer(snd_mixer_t *mixer, const char *dev) {
int err;
--- /dev/null
+/***
+ This file is part of PulseAudio.
+
+ Copyright 2009 Lennart Poettering
+
+ PulseAudio is free software; you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as published
+ by the Free Software Foundation; either version 2 of the License,
+ or (at your option) any later version.
+
+ PulseAudio is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with PulseAudio; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ USA.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "alsa-util.h"
+#include "module-alsa-card-symdef.h"
+
+PA_MODULE_AUTHOR("Lennart Poettering");
+PA_MODULE_DESCRIPTION("ALSA Card");
+PA_MODULE_VERSION(PACKAGE_VERSION);
+PA_MODULE_LOAD_ONCE(FALSE);
+
+static void enumerate_cb(
+ const pa_alsa_profile_info *sink,
+ const pa_alsa_profile_info *source,
+ void *userdata) {
+
+ if (sink && source)
+ pa_log("Found Output %s + Input %s", sink->description, source->description);
+ else if (sink)
+ pa_log("Found Output %s", sink->description);
+ else if (source)
+ pa_log("Found Input %s", source->description);
+
+}
+
+int pa__init(pa_module*m) {
+ pa_alsa_redirect_errors_inc();
+ pa_alsa_probe_profiles("1", &m->core->default_sample_spec, enumerate_cb, m);
+ return 0;
+}
+
+void pa__done(pa_module*m) {
+ pa_alsa_redirect_errors_dec();
+}